Journal List > J Korean Ophthalmol Soc > v.52(7) > 1009082

Lee, Park, Lee, and Oum: Posterior Subtenon Triamcinolone Acetonide Injection for Refractory Diabetic Macular Edema in Vitrectomized Eye

Abstract

Purpose

To evaluate the effect of posterior subtenon injection of triamcinolone acetonide (TA) in patients with refractory diabetic macular edema (DME) after vitrectomy.

Methods

Seventeen vitrectomized eyes in 16 patients with DME underwent a posterior subtenon injection of TA (40 mg/1.0 ml) and were followed-up for more than six months. Visual acuity (VA, logMAR) and central subfield macular thickness (CSMT, μ m) according to optical coherent tomography were assessed at baseline and 1, 3, and 6 months after an injection of TA.

Results

The patients included four men and 12 women with an average age of 56.9 years. VA improved significantly from 0.70 ± 0.33 (mean ± SD) before injection to 0.56 ± 0.24 one month and 0.54 ± 0.21 three months after an injection of TA. Visual acuity at six months was 0.61 ± 0.24 and had no significance (p = 0.17). CSMT decreased significantly from 469 ±145 before injection to 323 ± 58, 343 ± 100, and 389 ± 156 one, three, and six months after an injection of TA, respectively.

Conclusions

Posterior subtenon injection of TA is effective in the short-term for improving VA and CMT in patients with refractory diabetic macular edema after vitrectomy.

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Figure 1.
Changes in mean visual acuity (LogMAR) in patients after posterior sub-Tenon injection of triamcinolone acetonide for diabetic macular edema in vitrectomized eyes (* p < 0.05).
jkos-52-832f1.tif
Figure 2.
Changes in mean central subfield macular thickness in patients after posterior sub-Tenon injection of triamcinolone acetonide for diabetic macular edema in vitrectomized eye (*p < 0.05).
jkos-52-832f2.tif
Table 1.
Clinical characteristics of patients with diabetic macular edema after vitrectomy
Number of the cases 17
Age (mean ± SD, yr) 56.9 ± 12.3
Sex (M:F, n) 4:12
Diagnosis (n)  
  Vitreous hemorrhage 6
  Diabetic macular edema 11
Concurrent procedures  
  Cataract surgery 9
  Internal limiting membrane removal 10
Table 2.
Changes in visual acuity (Snellen) and central subfield macular thickness in patients after posterior sub-Tenon injection of triamcinolone acetonide for diabetic macular edema in vitrectomized eyes
  Preinjection 1 month 3 months 6 months p-value
Visual acuity          
  <0.1 2 1 0 1  
  0.1–0.5 13 13 15 14 p = 0.87
  ≥0.5 2 3 2 2  
CSMT* (μ m)          
  <300 0 7 6 6  
  300–500 10 10 9 8 p = 0.02
  ≥500 7 0 2 3  

Chi-square test.

* CSMT = central 1-mm subfield macular thickness.

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